Scientists Are Fighting To Save Ancient Human History From a Rising Threat

Our story begins in Africa, where our species and its close relatives evolved; even the Flores hominins are descended from a species called Homo erectus that arose in Africa before spreading across most of the world. Most of the hominin sites in southern Africa tend to be in caves, like the Rising Star Cave System, where University of Wisconsin anthropologist John Hawks and University of Witwatersrand anthropologist Lee Berger have studied the remains of a species called Homo naledi, first discovered in 2013.